Sealant TechnologyFrequently Asked Questions

Answer: Urethanes are plastics that
have gas-filled bubbles that make them light weight and a good
insulating material.

Question: What is the difference between
open-cell and closed-cell polyurethane foams?

Answer: These two types of
polyurethane foams have different R-values, permeability, strength, and
costs. Click here for more information

Question: What is the
difference between CFC, HCFC and HFC blowing agents in polyurethane
foams?

Answer: These "Flouro-carbons" have different amounts of chlorine
or are designed to prevent chlorine release into the atmosphere.

Question:
Do urethanes "outgas" and are they toxic?

Answer: Urethanes are
non-toxic and only require protection for our operators during
installations, but the finished product is completely safe and has no
formaldehydes.

Question: Are urethanes good for sound
insulation?

Answer: Open-cell urethanes are better than closed-cell
foams for reducing air-borne sound. Both are good at sealing holes that
can let sound through wall or ceiling penetrations. Structure-borne
sound CANNOT be controlled with low-density infill materials such as
foam or sealants.

Question: What sort of paint should I use for
covering polyurethane foams & sealants?

Answer: Typically,
spray-applied polyurethane foam is covered by interior or exterior wall
coverings or ceiling or roofing details. That said, on occasion it is
left exposed and the concern really is only that of ultra-violet light
that will degrade the exposed foam over time. In exterior applications, a
paint will not suffice, rather a protective coating should be used.